Differential regulator, Back pressure regulator or relief valve – Grain Systems PNEG-526 User Manual
Page 172
RELIEF OR BACK
PRESSURE RANGE
3" to 5
1
/
2
" w.c.
5" to 7
1
/
2
" w.c.
6" to 13" w.c.
10" to 15" w.c.
12" to 25" w.c.
18" w.c. to 2 psi
1 psi to 4 psi
3 psi to 6 psi
6 psi to 10 psi
3" to 5
1
/
2
" w.c.
5" to 7" w.c.
6" to 12" w.c.
12" to 25" w.c.
20" w.c. to 1
3
/
4
psi
1
1
/
2
" to 2
3
/
4
psi
3" to 4
1
/
2
" w.c.
3" to 6" w.c.
5" to 11" w.c.
10" to 24" w.c.
14" w.c. to 1
1
/
4
psi
Differential Regulator
DIFFERENTIAL
PRESSURE
RANGE
3
1
/
2
" to 6
1
/
2
" w.c.
5" to 8
1
/
2
" w.c.
6" to 14" w.c.
12" to 28" w.c.
1 psi to 2 psi
3
1
/
2
" to 6
1
/
2
" w.c.
5" to 8
1
/
2
" w.c.
6" to 14" w.c.
12" to 28" w.c.
1 psi to 2 psi
3
1
/
2
" to 6
1
/
2
" w.c.
5" to 8
1
/
2
" w.c.
6" to 14" w.c.
12" to 28" w.c.
1 psi to 2 psi
1
1
/
2
psi to 3 psi
SPRING
PART
NUMBER
143-82-021-00
143-82-021-01
143-82-021-02
143-16-021-05
143-16-021-06
143-16-021-03
143-16-021-04
143-16-021-05
143-16-021-06
143-16-021-07
121-62-021-50
121-62-021-51
121-62-021-52
121-62-021-53
143-16-021-07
143-16-021-08
MAXIMUM
BODY
PRESSURE
60 psi
60 psi
40 and 15*
40 and 15*
MAXIMUM
DIAPHRAGM
PRESSURE
DIFFERENTIAL
2 psi
2 psi
1 psi
2 psi
MAXIMUM
DIAPHRAGM
CASE
PRESSURE
35 psi
20 psi
10 psi
20 psi
*3" 121-16 is 40 psi. and 4" 121-16 is 15 psi.
**
3
/
4
" x
3
/
4
" not available.
Back Pressure Regulator or Relief Valve
SPRING COLOR
Red-Black
Blue-Black
Green-Black
Blue (2" O.D.)
Green (2" O.D.)
Orange (2" O.D.)
Black
Cadmium*
Cadmium (outer)*
White (inner)
Red (2" O.D.)
Blue (2" O.D.)
Green (2" O.D.)
Orange (2" O.D.)
Black
Cadmium
Red (3" O.D.)
Blue (3" O.D.)
Green (3" O.D.)
Orange (3" O.D.)
Yellow
PART
NUMBER
143-82-021-00
143-82-021-01
143-82-021-02
143-16-021-04
143-16-021-05
143-16-021-06
143-16-021-07
143-16-021-08
143-16-021-08
143-16-021-13
143-16-021-03
143-16-021-04
143-16-021-05
143-16-021-06
143-16-021-07
143-16-021-08
121-62-021-50
121-62-021-51
121-62-021-52
121-62-021-53
121-62-021-56
MAX. DIAPHRAGM
CASE PRESSURE
10 psi
20 psi
10 psi
5 psi
SIZE
3
/
4
" thru 2
1
/
2
"
121-8**
3
/
4
" thru 2
1
/
2
"
121-8**
1
1
/
2
", 2" and 2
1
/
2
"
121-12
1
1
/
2
" thru 4"
121-12
3" and 4"
121-16
*Require High Pressure Spring Adjustment (121-8HP).
**
3
/
4
" x
3
/
4
" not available.
SIZE
3
/
4
", 1" and 1
1
/
4
"
121-8**
1
1
/
2
", 2" and 2
1
/
2
"
121-12
3" and 4"
121-16
3" and 4"
121-12
SPRING
COLOR
Red-Black
Blue-Black
Green-Black
Green
Orange (2" O.D.)
Red (2" O.D.)
Blue (2" O.D.)
Green (2" O.D.)
Orange (2" O.D.)
Black
Red (3" O.D.)
Blue (3" O.D.)
Green (3" O.D.)
Orange (3" O.D.)
Black
Cadmium
4
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